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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

Posted on 20 January 2013 by John Hartz

SkS Highlights

The original Youtube video, 16 ^ more years of global warmingcreatedby Kevin C and narrated by Daniel Bailey has now been watched more than 33,000 times. A new version of the video with German voice-over has also been created and uploaded to the SkS-Youtube channel. Click here to access the German version.

Toon of the Week

Quote of the Week

"Our results suggest that if droughts continue at five- to 10-year intervals or increase in frequency due to climate change, large areas of the Amazon forest are likely to be exposed to persistent effects of droughts and corresponding slow forest recovery," Saatchi* said. "This may alter the structure and function of Amazonian rainforest ecosystems."

SkS Spotlights

A new textbook, "Climate Change: What the Science tells us" by Charles Fletcher includes graphics from the SkS website. Fletcher is Associate Dean, School of Ocean and Earth Science and Technology, University of Hawaii.

Fletcher offers the first real textbook to present the science surrounding climate change at the right level for an undergraduate student. His polished writing style makes this an entertaining read while the pedagogical support and organization helps students better identify and understand key concepts, ideas and terms. Each chapter is organized with learning objectives, student exercises, videos, scientific citations to promote further learning, and creative thinking problems to underpin classroom discussion.

It looks like the koeln university predicts the southern Greenland melt of 2013 is under way. Also the SSW (sudden stratospheric warming) event up in the stratosphere might be worth of note (not common in winter).

Ice circulation this winter has been stronger than usual, likely much of it is still (in january) because the melt extent last summer. At least in the Baltic, only when the temperatures start to warm up for the spring the last of the leads close. Anyway
the circulation pattern has been unusual. If there was no GW, that sort of circulation would have been interpreted as building thicker ice, but this year there are still places
where ice may expand I doubt this is happening.

OK, now that I learned this image stuff (again) I'll try to link outside: 'Wipneus' @ Neven's Arctic ice blog has done a great job in extracting ice volumes (from the Piomas model), gridding and extrapolating to (what may be Maslowskij's style) zero. If the extrapolation 'holds water' the result is rather notable.
Much talk there, some going over my head. Anyway here's the image (let's see if it sticks)

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